Entering a maze of muddy islands, the mouth of the Victoria is a vast delta within the Joseph Bonaparte Gulf that does not easily explain itself to mariners. We are in the 65-foot Island Explorer, decked out for group fishing tours but now temporarily repurposed in an attempt to locate two anchors that were cut free from the Beagle at a point on the river named Holdfast Reach 180 years earlier.

Maritime experts are convinced they have confirmed the final resting place of Captain James Cook's ship, Endeavour, after 22 years of searching.

…Somewhere in this spectrum fits Tim Severin who died three weeks ago in West Cork, Ireland. In my teenage years I read “The Brendan Voyage” a few times, relishing his account of both the research and the execution of his greatest adventure…